EP2819274A1 - Paquet rotorique déplaçable - Google Patents

Paquet rotorique déplaçable Download PDF

Info

Publication number
EP2819274A1
EP2819274A1 EP13174332.0A EP13174332A EP2819274A1 EP 2819274 A1 EP2819274 A1 EP 2819274A1 EP 13174332 A EP13174332 A EP 13174332A EP 2819274 A1 EP2819274 A1 EP 2819274A1
Authority
EP
European Patent Office
Prior art keywords
lamination
laminations
alignment
rotor core
connecting element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13174332.0A
Other languages
German (de)
English (en)
Inventor
Thomas Mahler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Priority to EP13174332.0A priority Critical patent/EP2819274A1/fr
Priority to PCT/EP2014/063500 priority patent/WO2014207095A1/fr
Publication of EP2819274A1 publication Critical patent/EP2819274A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit

Definitions

  • the present invention relates to a lamination, in particular for forming a rotor core for an electromagnetic machine.
  • the lamination contains a front side, a rear side, a base body with a center, an inner side, an outer side and at least one first web and a second web.
  • a groove is positioned between the first web and the second web.
  • the invention relates to a method for producing a rotor core consisting of a plurality of such laminations.
  • the electromechanical machine may be, for example, an electric motor, a generator, a hydraulic motor or a pump.
  • the stator usually consists of a cylindrical laminated core, which is formed from a plurality of stacked and interconnected laminations.
  • the laminations of the stator are each formed substantially in the form of a ring.
  • Each of these ring elements has an even number of pole elements which extend from the inside of the ring element in the radial extent to the center of the ring element. Between each of these pole elements is a groove.
  • the individual pole elements arranged one behind the other form an elongate pole piece for accommodating one coil winding each.
  • the coil winding serves to generate a magnetic field, which in turn causes the rotor to rotate and as a result generates a torque which is transmitted to a drive shaft located in the rotor.
  • the laminated core and in particular the grooves are injected between the individual pole elements with a plastic layer for insulation against the coil winding.
  • the rotor which is rotatably mounted on the drive shaft in the magnetic field generated by the coil windings between the pole pieces of the stator.
  • the rotor usually also consists of a plurality of stacked and interconnected laminations.
  • the laminations of the rotor contain a substantially round body with a central receiving opening for the Drive shaft and a number of webs.
  • the webs extend in the radial direction from the center of the body to the outside. Between the webs there is a groove for receiving in each case a permanent magnet. With the aid of the permanent magnets, the rotor is rotated in conjunction with the magnetic field which is generated in the coil windings.
  • the rotor core is coated with a plastic insulation layer to protect against mechanical influences.
  • a rotor according to the prior art is in the German patent application DE102007047715 shown.
  • a rotor for an electric machine is disclosed.
  • the rotor includes a rotor shaft, a rotatably connected to the rotor shaft rotor hub and at least one mounted on the rotor hub, equipped with a rotor winding, permanent magnets or a short-circuit cage lamella or rotor core.
  • the lamella or rotor laminated core consists of a plurality of juxtaposed and interconnected laminations.
  • the laminations are usually metallic body, which are punched from a larger sheet metal plate. However, during the stamping process, it can not be ruled out due to the process that the laminations are not absolutely flat and thus have a wave shape. The problem of non-planar and wavy punched sheet metal laminations is the greater the thinner the laminations are.
  • the object of the present invention is to solve these problems described above, and more particularly to provide a lamination, in particular for forming a rotor core for an electromagnetic machine and a method for manufacturing a rotor core consisting of a plurality of such lamination, which minimizes the joining tolerances in a rotor core, to thereby achieve the best possible use of the available space on the rotor core and an overall increase in efficiency of the electromagnetic machine formed by the stator and rotor.
  • a lamination in particular for forming a rotor core for an electromagnetic machine is provided, wherein the lamination a front and a back, a body having a center, an inner side, an outer side, at least a first web and a second web and one between the first Includes web and the second web positioned groove.
  • At least one alignment device is provided for aligning the sheet metal lamination to form a second adjacent sheet metal lamination.
  • a method for producing a rotor core consisting of a plurality of such laminations.
  • first connecting element and a second connecting element for connecting the lamination with a second adjacent lamination, wherein the first connecting elements and the second connecting element are positioned at the same radius to the center of the body.
  • first and second connecting element can be rotated about a common center point for a corresponding positioning relative to one another.
  • the alignment device has at least one first alignment element, wherein the at least first alignment element is configured to align a rotor core formed by stacked laminations with the aid of a reference device. Due to the specific configuration of the at least first alignment element, it is possible that the reference device can act on the first alignment element. It is particularly possible that the reference device is part of a Umspritztechnikmaschines for attaching a plastic insulation layer on the outside of a rotor core, thereby conveniently directly after the alignment of the individual laminations to each other a plastic insulation layer outside attached to the aligned rotor core and thus the individual laminations firmly together can be connected.
  • the reference device is designed in the form of a cylindrical receptacle into which the laminations can be inserted and aligned with each other.
  • the individual laminations are connected to each other by means of a separate joining process. This at least one joining process can be carried out when the laminations are still arranged in or on the reference device, or after the stacked to a rotor core laminations were removed from or from the reference device.
  • the joining processes may include gluing, welding, soldering, forming, pressing or pressing in or the like.
  • the first alignment element is designed as a survey on the outside of the body. In this way it can be ensured that the first alignment element is held firmly in the corresponding reference device.
  • the first alignment element prefferably configured as a bore through the base body and a second alignment element as a bore through the base body, wherein the first alignment element designed as a bore has a smaller diameter than the second alignment element configured as a bore. In this way it can be ensured that the first alignment element is held firmly in the corresponding reference device and at the same time the second alignment element for aligning the laminations in the corresponding reference device is displaceable.
  • first connection element on the front side of the lamination plate can be designed as a recess and the second connection element on the back side of the lamination plate can be designed as a projection corresponding to the recess. This ensures that on the one hand the individual laminations are connected to each other and on the other hand, the individual laminations can also be rotated to each other to achieve a fine alignment of the laminations to each other.
  • the individual laminations can be rotated only on a predetermined axis of rotation to each other, can be provided according to a further advantageous embodiment of the present invention that the elevation and the recess are designed circular arc, so that the survey in the well along an orbit around the center of the Main body is displaceable.
  • Fig. 1 and 2 show a lamination 10 for forming a rotor core 1 for a (not shown) electromagnetic machine, such as an electric motor, according to a first embodiment.
  • the lamination 10 contains substantially a front side 12, a rear side 14 and a base body 18th
  • the main body 18 in turn has four webs 19a, 19b, 19c, 19d, a central receiving opening 20, a center 21, an inner side 22, an outer side 23, a first connecting element 24, a second connecting element 25 and an alignment device 40.
  • the central receiving opening 20 serves for non-rotatably receiving a drive shaft, not shown, with which a generated torque will be transmitted.
  • Each web 19a, 19b, 19c, 19d is designed substantially in a rectangular shape and positioned at equal distances from each other on the outside 23 around the base body 18.
  • the webs 19a, 19b, 19c, 19d extend from the main body 18 in the radial direction to the outside.
  • each web 19a, 19b, 19c, 19d is in each case a groove 26a, 26b, 26c, 26d in the form of a U-shaped recess.
  • the groove 26a, 26b, 26c, 26d serves to receive a permanent magnet, not shown.
  • a rotor coil winding (also not shown) may also be positioned instead of a permanent magnet.
  • the first connecting element 24 is configured in the form of a circular-arc-shaped recess with a slightly rounded tip and is located on the front side 12 of the lamination 10.
  • the second connecting element 25 is in the form of a circular arc-shaped elevation corresponding to the recess of the first connecting element 24 configured and positioned on the back 14 of the lamination 10.
  • the first connecting element 24 and the second connecting element 25 are positioned one above the other according to their respective position on the front side 12 and the rear side 14 of the lamination 10, so that the depression (first connecting element 24) and the elevation (second connecting element 25) are at the same radius or at the same time . Circumference to the center 21 of the body 18 lie.
  • the elevation (second connecting member 25) is inserted into the recess (first connecting member 24).
  • the elevation is to a certain extent ⁇ shorter than the depression, so that after the introduction of the elevation of an upper lamination 10a in the recess of a lower lamination 10b, the two laminations 10 for mutual alignment relative to each other along the double arrow Q (see. Fig. 3 ) can be twisted.
  • the alignment device 40 contains an alignment element 42 in the form of a rectangular elevation on the outside 23 of the base body 18.
  • the alignment element 42 is positioned between two webs 19c, 19d arranged on the inside 22 of the base body 18 and serves for this purpose with the aid of a reference device 50 to align a stator stack 1 formed by stacked laminations 10.
  • the reference device 50 is formed substantially in the form of an elongated shaft 52 which extends coaxially to a central axis M of the lamination 10 and into which the alignment 42 can be inserted accurately and positively, since the width of the Shaft 52 corresponds to the width of the elevation of the alignment element 42.
  • a second embodiment of the inventive lamination 10 is shown.
  • the second embodiment corresponds essentially to the first embodiment.
  • an essential difference between the first and second embodiments is the configuration of the alignment device 40.
  • the alignment device 40 has a first alignment element 43 and a second alignment element 44.
  • the first alignment element 43 is designed in the form of a bore 63 through the base body 18 and the second alignment element 44 in the form of a bore 64 through the base body 18.
  • the diameter of the bore 63 of the first alignment member 43 is smaller than the diameter of the bore 64 of the second alignment member 44.
  • the smaller bore 63 of the first alignment member 43 also serves to align with the aid of a reference device 50 formed by stacked laminations 10 rotor core 1.
  • this reference device 50 is designed substantially in the form of a pin 53 with a circular diameter. The diameter of the pin 53 can be accurately and positively inserted into the smaller bore 63 of the first alignment member 43, since the diameter of the pin 53 of the reference device 50 corresponds to the diameter of the smaller bore 63 of the first alignment member 43.
  • the individual laminations 10 are positioned relative to each other and lined up, that in each case designed as a recess first connecting element 24 of a first lamination 10a is directed to the designed as a survey second connecting element 25 of an adjacent lamination 10b, so that the Survey is introduced into the depression, cf. Fig. 2 and 3 , Characterized in that, as described above, configured as a survey second connecting element 25 is not absolutely accurate fit in the designed as a recess second connecting element 24 and both the survey and the depression are configured circular arc, the individual laminations 10 can to a certain extent twist relative to each other and align against each other. With the aid of the first and second connecting elements 24, 25 can thus compensate for manufacturing inaccuracies in the individual laminations 10 by twisting.
  • the individual laminations 10 are positioned to form a straight rotor core 1 to each other and lined up, that they are positioned offset from each other according to the waveform of individual laminations 10. This means that, to compensate for an undesired waveform of a first sheet-metal lamination 10a, the subsequent lamination sheet 10b is set correspondingly offset to this preceding sheet-metal lamination 10a, whereby this wave form can be compensated and a straight stator core 1 can be generated, cf. Fig. 4 and 8th ,
  • the juxtaposition or stacking of the individual laminations 10 has to be done so that always the webs 19a, 19b, 19c, 19d of the individual laminations 10 are one above the other.
  • laminations 10 can be placed on each other with the four webs 19a, 19b, 19c, 19d in four different positions.
  • the number of possibilities of stacking the laminations 10 therefore corresponds to the number of webs 19a, 19b, 19c, 19d on the laminations 10th
  • the rotor core 1 is configured by the twisted stacking of the individual laminations 10 for the purpose of compensating for inaccuracies in the laminations 10 so that a lamination 10 are rotated by 90 °, 180 ° or 270 ° about the central axis M.
  • the matching that is designed as a shaft 52 designed reference device 50.
  • the laminations 10 are brought in the direction of arrow N on the reference device 50, so that the shaft 52 of this first reference device 50 can receive the alignment elements 42 (surveys), so as to the individual laminations 10 in the to force appropriate form and direction.
  • the reference device 50 in the form of a cylindrical pin 53 configured.
  • the reference device 50 for aligning the laminations 10 to each other designed as a pin 53 reference device in all holes 63, 64 of the alignment elements 43, 44 is introduced. Since the bore 63 of the first alignment elements 43 is smaller than the bores 64 of the second alignment elements 44, the first alignment elements 44 can be drawn accurately onto the reference device 50 embodied as a pin 53.
  • the second alignment element 44 can be displaced around the reference device 50 embodied as a pin 53 or aligned with the final fine alignment of the lamination 10.
  • the laminations 10 are aligned by means of the alignment device 40 and the mating reference device 50 for producing a straight rotor core 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
EP13174332.0A 2013-06-28 2013-06-28 Paquet rotorique déplaçable Withdrawn EP2819274A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13174332.0A EP2819274A1 (fr) 2013-06-28 2013-06-28 Paquet rotorique déplaçable
PCT/EP2014/063500 WO2014207095A1 (fr) 2013-06-28 2014-06-26 Paquet rotorique déplaçable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13174332.0A EP2819274A1 (fr) 2013-06-28 2013-06-28 Paquet rotorique déplaçable

Publications (1)

Publication Number Publication Date
EP2819274A1 true EP2819274A1 (fr) 2014-12-31

Family

ID=48700401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13174332.0A Withdrawn EP2819274A1 (fr) 2013-06-28 2013-06-28 Paquet rotorique déplaçable

Country Status (2)

Country Link
EP (1) EP2819274A1 (fr)
WO (1) WO2014207095A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026543A (zh) * 2015-03-27 2016-10-12 株式会社三井高科技 层叠铁芯和层叠铁芯的制造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115085491B (zh) * 2022-07-20 2022-11-04 盛瑞传动股份有限公司 电机转子压装方法及工具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802068A (en) * 1972-04-14 1974-04-09 Gould Inc Method of making a rotor
DE3408563A1 (de) * 1984-03-09 1985-09-19 Kienle & Spiess Stanz- und Druckgießwerk GmbH, 7123 Sachsenheim Stanzblechteil zur herstellung von blechpaketen fuer rotoren, statoren, magnetkerne und dergleichen
EP0898354A1 (fr) * 1997-08-19 1999-02-24 General Electric Company Moteur avec verouillages par paires du stator et du rotor et méthode de production
EP1617542A1 (fr) * 2003-04-23 2006-01-18 Mitsui High-tec, Inc. Noyau de fer lamine a forme oblique variable et procede de fabrication correspondant
EP1850457A2 (fr) * 2006-04-27 2007-10-31 Suntech Generator Co., Ltd Dispositif rotatif de générateur ou de moteur
DE102007047715A1 (de) 2007-10-05 2009-04-09 Robert Bosch Gmbh Rotor, für eine elektrische Maschine sowie elektrische Maschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802068A (en) * 1972-04-14 1974-04-09 Gould Inc Method of making a rotor
DE3408563A1 (de) * 1984-03-09 1985-09-19 Kienle & Spiess Stanz- und Druckgießwerk GmbH, 7123 Sachsenheim Stanzblechteil zur herstellung von blechpaketen fuer rotoren, statoren, magnetkerne und dergleichen
EP0898354A1 (fr) * 1997-08-19 1999-02-24 General Electric Company Moteur avec verouillages par paires du stator et du rotor et méthode de production
EP1617542A1 (fr) * 2003-04-23 2006-01-18 Mitsui High-tec, Inc. Noyau de fer lamine a forme oblique variable et procede de fabrication correspondant
EP1850457A2 (fr) * 2006-04-27 2007-10-31 Suntech Generator Co., Ltd Dispositif rotatif de générateur ou de moteur
DE102007047715A1 (de) 2007-10-05 2009-04-09 Robert Bosch Gmbh Rotor, für eine elektrische Maschine sowie elektrische Maschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026543A (zh) * 2015-03-27 2016-10-12 株式会社三井高科技 层叠铁芯和层叠铁芯的制造方法
US10581303B2 (en) 2015-03-27 2020-03-03 Mitsui High-Tec, Inc. Laminated iron core and manufacturing method of laminated iron core
CN106026543B (zh) * 2015-03-27 2020-04-07 株式会社三井高科技 层叠铁芯和层叠铁芯的制造方法
US11632023B2 (en) 2015-03-27 2023-04-18 Mitsui High-Tec, Inc. Laminated iron core and manufacturing method of laminated iron core

Also Published As

Publication number Publication date
WO2014207095A1 (fr) 2014-12-31

Similar Documents

Publication Publication Date Title
DE102010004887A1 (de) Spulenkörper zur Montage an einem Magnetkern, Magnetkern für Reluktanzresolver und Verfahren zur Herstellung
DE102009056647A1 (de) Stator für einen Elektromotor sowie Verfahren zu dessen Herstellung
DE102012012569A1 (de) Stator, verfahren zu seiner herstellung und motor
DE102016102655A1 (de) Rotoranordnung mit mehreren magnetlängen für elektrische maschinen und herstellverfahren
DE102004054277A1 (de) Rotoranordnung für eine elektrische Maschine und Verfahren zur Herstellung einer Rotoranordnung
DE102012022084A1 (de) Rotoranordnung für eine elektrische Maschine, elektrische Maschine und Verfahren zum Herstellen der Rotoranordnung
DE112017004940T5 (de) Rotorkern, Rotor und Motor
DE102012006169A1 (de) Verfahren zum Herstellen eines Motors und Elektromotor mit einem Rotor
WO2019223832A1 (fr) Empilage et restriction de tôles de rotor pour machine électrique, machine électrique et procédé de fabrication d'un rotor
DE102008054381A1 (de) Elektrische Maschine mit einem Polrad
DE102020204576A1 (de) Lamellenpaket für eine elektrische Maschine, sowie eine elektrische Maschine aufweisend ein Lamellenpaket, und Verfahren zum Herstellen eines Statorgrundkörpers
DE112017004967T5 (de) Rotorkern, rotor, motor, herstellungsverfahren eines rotorkerns und herstellungsverfahren eines rotors
EP2876789B1 (fr) Procédé de fabrication d'un rotor
DE102008041555A1 (de) Rotoreinheit für eine permanenterregte elektrische Maschine und Verfahren zur Montage von Permanentmagneten
WO2013053479A1 (fr) Ensemble de tôles de rotor et procédé de fabrication
EP2903139B1 (fr) Paquet de tôles de rotor, notamment pour un moteur électrique
DE102011121531A1 (de) Ringförmiges Rotorblech mit Innenkontur für einen Elektromotor
WO2014207095A1 (fr) Paquet rotorique déplaçable
DE102015222271A1 (de) Rotor sowie elektrische Maschine
DE102011003831A1 (de) Stator einer elektrischen Maschine
DE102019119244A1 (de) Permanenterregter geschrägter Elektromotor-Rotor
DE102016216773A1 (de) Rotorblechpaket und Statorblechpaket für eine elektrische Maschine
DE102016212004A1 (de) Rotor mit Rotorschrägung für eine elektrische Maschine und Elektromotor für den Fahrantrieb eines Kraftfahrzeugs
DE102016207944A1 (de) Paketsystem für eine elektrische Maschine, elektrische Maschine und Verfahren zur Herstellung des Paketsystems
DE102010005490A1 (de) Rotor einer elektrischen Maschine und Verfahren zur Herstellung eines Rotors einer elektrischen Maschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130628

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150701